/Engine/Plugins/Animation/MLDeformer/MLDeformerFramework/Source/MLDeformerFrameworkEditor/Public/MLDeformerMorphModelEditorModel.h
Process and filter a vertex delta position and normal and apply scaling to it. The scaling of these deltas is based on a given morph mask weight, a global mask weight, and a delta zero threshold, which filters out small deltas entirely.
Returns true if this vertex should be included in the morph target, or false if it has been filtered out based on the provided delta threshold.
bool ProcessVertexDelta ( FVector3f & OutScaledDelta, FVector3f & OutScaledDeltaNormal, const FVector3f RawDelta, const FVector3f RawDeltaNormal, float DeltaThreshold, float MorphMaskWeight, float GlobalMaskWeight ) const